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iio: adc: ad7298: rework external ref setup & remove platform data

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This change removes the old platform data for ad7298. It is only used to
provide whether to use an external regulator as a reference.

So, the logic is inverted a bit. The driver now tries to obtain a
regulator. If one is provided, then the external ref is used. The rest of
the logic should work as before.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201001141048.69050-1-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean 2020-10-01 17:10:48 +03:00 • committed by Jonathan Cameron
parent 0e7a3978a4
commit 28963f2f6b
2 changed files with 9 additions and 27 deletions
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19
include/linux/platform_data/ad7298.h
View file

@ -1,19 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* AD7298 SPI ADC driver
*
* Copyright 2011 Analog Devices Inc.
*/
#ifndef __LINUX_PLATFORM_DATA_AD7298_H__
#define __LINUX_PLATFORM_DATA_AD7298_H__
/**
* struct ad7298_platform_data - Platform data for the ad7298 ADC driver
* @ext_ref: Whether to use an external reference voltage.
**/
struct ad7298_platform_data {
bool ext_ref;
};
#endif /* IIO_ADC_AD7298_H_ */